What was found
DURING PRE-FLIGHT INSPECTION, FLIGHT CREW FELT BINDING ON THE AILERON SYSTEM UPON FURTHER INSPECTION FOUND BEARINGS IN AILERON LEVER 2 ASSY. TO BE DAMAGED AND BINDING. DAMAGE APPEARS TO BE CAUSED BY THE BUSHING PN 120A4435.02 IN THE FORK ENDS PN 120A4435.01. IT APPEARS THAT DESIGN LIMITATIONS OF THE FLIGHT CONTROL SYSTEM EXCEEDS LIMITATIONS OF THE BEARINGS ALLOWING BUSHING TO APPLY EXCESSIVE FORCE ON BEARING DURING FULL DEFLECTION. RECOMMEND REDESIGN OF FLIGHT CONTROL SYSTEM OR REPLACE BEARINGS WITH NEW BEARINGS THAT HAVE GREATER LIMITS.